Scilab Website | Contribute with GitLab | Mailing list archives | ATOMS toolboxes
Scilab Online Help
6.0.2 - 日本語

Change language to:
English - Français - Português - Русский

Please note that the recommended version of Scilab is 2024.0.0. This page might be outdated.
See the recommended documentation of this function

Scilabヘルプ >> Elementary Functions > elementarymatrices > empty

empty

([]) 空行列

説明

[] は空行列を定義します. この行列は特殊な行列として定義され, 0行0列,すなわちsize([]) =[0,0]となります. 以下の便利な表記が使用可能です:

[] * A = A * [] = []

[] + A = A + [] = []

[ [], A] = [A, []] = A

明示的な答えがない場合,行列関数は [] またはエラーメッセージを 返します. 空の線形システム (syslin リスト) は複数の行または列を有する可能性があります.

例s

s=poly(0,'s'); A = [s, s+1];
A+[], A*[]
A=rand(2,2); AA=A([],1), size(AA)
svd([])
w=ssrand(2,2,2); wr=[]*w; size(wr), w1=ss2tf(wr), size(w1)

参照

  • null — deletes a list component or a field of a structure, Mlist, or Tlist
  • isempty — 変数が空の行列または空のリストかどうかを調べる
  • emptystr — 長さ0の文字列
  • brackets — Concatenation. Recipients of an assignment. Results of a function
  • operators — scilab 演算子の名前
  • matrices — Scilab オブジェクト, Scilabの行列

履歴

バージョン記述
6.0.0
  • A+[], []+A and A-[] now return [] instead of A. []-A now returns [] instead of -A.
  • A>[], A>=[], A<[], A<=[], []>A, []>=A, []<A, and []<=A now return [] instead of an error.
Report an issue
<< diag elementarymatrices eye >>

Copyright (c) 2022-2023 (Dassault Systèmes)
Copyright (c) 2017-2022 (ESI Group)
Copyright (c) 2011-2017 (Scilab Enterprises)
Copyright (c) 1989-2012 (INRIA)
Copyright (c) 1989-2007 (ENPC)
with contributors
Last updated:
Thu Feb 14 15:02:06 CET 2019